2-O-Acetyl-ala-2-N-Me-met-enkephalinamide 69924-15-8 Enkephalinamide-met, O-Ac-ala(2)-N(2)-Me- Enkephalinamide-met, O-acetylalanyl(2)-N(2)-methyl- L-Methioninamide, O-acetyl-L-tyrosyl-D-alanylglycyl-L-phenylalanyl-N2-methyl- Lilly 127623 Met-enkephalinamide, O-Ac-ala(2)-N(2)-Me- Methionine-enkephalinamide, O-Ac-ala(2)-N(2)-Me- O-Acetyl-2-alanyl-2-N-methyl-methionine enkephalinamide